/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read;

import org.apache.iotdb.commons.exception.IllegalPathException;
import org.apache.iotdb.commons.path.PartialPath;
import org.apache.iotdb.db.mpp.common.header.ColumnHeader;
import org.apache.iotdb.db.mpp.common.header.ColumnHeaderConstant;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNodeId;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNodeType;
import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils;

import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.stream.Collectors;

public class DevicesCountNode extends SchemaQueryScanNode {

    public DevicesCountNode(PlanNodeId id, PartialPath partialPath, boolean isPrefixPath) {
        super(id, partialPath, isPrefixPath);
    }

    @Override
    public PlanNode clone() {
        return new DevicesCountNode(getPlanNodeId(), path, isPrefixPath);
    }

    @Override
    public List<String> getOutputColumnNames() {
        return ColumnHeaderConstant.countDevicesColumnHeaders.stream()
                .map(ColumnHeader::getColumnName)
                .collect(Collectors.toList());
    }

    @Override
    protected void serializeAttributes(ByteBuffer byteBuffer) {
        PlanNodeType.DEVICES_COUNT.serialize(byteBuffer);
        ReadWriteIOUtils.write(path.getFullPath(), byteBuffer);
        ReadWriteIOUtils.write(isPrefixPath, byteBuffer);
    }

    @Override
    protected void serializeAttributes(DataOutputStream stream) throws IOException {
        PlanNodeType.DEVICES_COUNT.serialize(stream);
        ReadWriteIOUtils.write(path.getFullPath(), stream);
        ReadWriteIOUtils.write(isPrefixPath, stream);
    }

    public static PlanNode deserialize(ByteBuffer buffer) {
        String fullPath = ReadWriteIOUtils.readString(buffer);
        PartialPath path;
        try {
            path = new PartialPath(fullPath);
        } catch (IllegalPathException e) {
            throw new IllegalArgumentException("Cannot deserialize DevicesSchemaScanNode", e);
        }
        boolean isPrefixPath = ReadWriteIOUtils.readBool(buffer);
        PlanNodeId planNodeId = PlanNodeId.deserialize(buffer);
        return new DevicesCountNode(planNodeId, path, isPrefixPath);
    }

    @Override
    public String toString() {
        return String.format(
                "DeviceCountNode-%s:[DataRegion: %s]", this.getPlanNodeId(), this.getRegionReplicaSet());
    }
}
